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Sydney, Australia. Looking a very happy Royal couple, Prince Charles and Princess Diana attend a charity ball at the Wentworth Hotel here as they continue their four week tour of AustraliaAgency: UPIPhotographer: Roy Letkey

Canberra, Australia. Prince Charles and Princess Diana pose for photos outside The Lodge with Australian Prime Minister Hawke and Mrs Hawke. The couple had luncheon with the Prime Minister and his wifePhotographer: Roy Letkey

Canberra, Australia. The Royal couple, Prince Charles and Princess Diana seen watching some children dancing during their visit to Karguru school, near Tennant Creek todayAgency: Associated PressPhotographer: Terry Phelan

Alice Springs, Australia. Prince Charles and Princess Diana at Ayres Rock today. The couple made a sightseeing tour to the rock as part of their six week Australian tourAgency: UPIPhotographer: Roy Letkey

London. Prince Charles being shown the workings of a telephone exchange before opening the Telecommunications Exhibition at the Science Museum in London today. The exhibition is sponsored by Standard Telephones and Cables, to mark the company'...